256,23 + 12,56 = 268,79

56,23 + 12,45 = 68,68

89,67 - 23,45 = 66,22

1,23 + 34,67 = 35,9

19,56 + 45,65 = 65,21

kp voi : http://olm/thanhvien/gop123 va mih dj

12 * 23 * 34 * 45 * 56 * 67 * 78  * 89 = 10 998 867 035 520

tk mk nha

hihi yêu mọi người nhiều lắm đấy  

=10998867035520 nha nhunge mà hơi to

= 404 

Tk nhé , mơn nhìu  !!!

~ HOK TỐT ~

Câu hỏi :

12 + 23 + 34 + 45 + 56 + 67 + 78 + 89 = ?

Trả lời :

12 + 23 + 34 + 45 + 56 + 67 + 78 + 89 = 404

Chúc bạn học tốt !

=405 đó bạn

bạn tk mik nha

1 + 12 + 23 + 34 + 45 + 56 + 67 + 78 + 89

= (1 + 89) + (12 + 78) + (23 + 67) + (34 + 56) + 45

= 90 + 90 + 90 + 90 + 45

= 90 x 4 + 45

= 360 + 45

= 405

Đề kì quá :(( Tới 12 là hết chưa?

Hảo đề . Sau 12 còn cộng thêm j ko?

 Số 0 sai rồi 12^x không bao giờ có số tận cùng là 0 đâu

10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000+2000000000000000000000000000000000999999999999999999999999999999999999999999999999999999999999999999999999999999999999444444444444444444444444444444444444444477777777777777777777777777777777777777777777777777772222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222299999999999999999999999999999922222222222222222222222222222222222222222999999999999922222222222222999999999999222222222222999999999999222222222229999999999992222222222=?

Bằng 494

12+23+34+45+56+67+78+89+90=494

=495

tick nha

1

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